Battlefield Network

• Sunny Chan as Fong Siu Long (方紹龍): reportedly a depiction of a former ATV worker who eventually became one of the station's Vice Presidents. He wound up working for MTV, after trying, without success, to work at RSTV. He worked his way up from his starting job as a Production Assistant, and eventually became a high-level executive at the station he has worked for all his life.
• Wayne Lai as Fong Siu Keung (方紹強): reportedly a depiction of film director Wong Jing. He worked at RSTV, and later became a movie director.
• Lai Ka-ka as Fong Sze-man (方思雯): Siu Long and Siu Keung's sister. She later developed a career as an actress specializing in action movies.
• Wong Shu-tong as Fong Yuen (方元): Siu Long and Siu Keung's father.
• Paw Hee-ching as Chow Ping (周萍): Siu Long and Siu Keung's mother.

• Berg Ng as Fok Wai Lhung (霍偉良): reportedly a composite character consisting of several former ATV producers. He was a senior producer at Media Television. He later became a movie director, wound up in jail, and returned to the TV industry after he was released from prison.
• Simon Chui as Lee Pak-tin (利伯天): Worked at MTV as an executive. He was later recruited to Goodwill Television (the in-universe stand-in for the defunct Commercial Television), and later returned to Media Television.
• Emotion Cheung as Cheung Kan-ming (張近明): a production assistant at MTV. He later had a career as a movie director, but was killed by triad members.
• Karen Chan as Ann Wan (溫飛霞): A production assistant that later married Siu Long. Died in a car accident in Australia.
• Kwan Kin as Chiu Tai Chung (趙大昌): reportedly a depiction of businessman Deacon Chiu, he bought Media Television, and renamed it Global Television (寰宇電視). Like the real life counterpart, Tai Cheung is known for being a miserly person.
• David Lau as Lee Fu (李富): A businessman who, after meeting Siu Long in Australia and hearing about the thrills of working in television, decided to buy MTV (by then renamed Global Television) outright. He renamed the station Sky Television (天下電視)

[1]

• Cecilia Lai as Chow Wing Chi (周詠芝): An actress who began her career at MTV, later moved to RSTV, and then returned to MTV (by then renamed Sky Television) after her husband and mother were embroiled in a gambling debt scandal. She and Siu Long had a relationship, which was quashed by her mother. She had an affair with Lee Fu, the station's owner, but was later dumped. She suffered from a mental breakdown after that.
• Andrew Yuen as Chow Kwok Yau (周國友): An actor who began his career at MTV, and later moved to RSTV. He married Chow Wing Chi, but later divorced due to a gambling debt scandal that resulted in a decision by RSTV to not renew their contracts.
• Lam Chi-pok as Lau Chi Shun (劉志信): reportedly a depiction of the late ATV actor David Lau (who also had a role in this series). He is an actor at MTV.
• Kristal Tin as Ai Mei Yee (艾美儀): A movie actress. She became romantically involved with Fong Siu Keung, even when he was a married man. She left Siu Keung for Lee Fu, in a plot hatched by Lee Fu, as Siu Keung was obsessed with the actress.

• Astrid Chan as Cheung Yuet (張月): A former reporter who later worked for MTV for a short time. She later became a radio host, and eventually was married to Fong Siu Long. The two had had feelings for each other for years.
• Ricky Chan as Sung Wai-nin (沈偉年)
• Chung Wai-ming as Hung Siu-siu (洪小小)
• Wong Wan-choi as Chiu Yeuk-yu (趙若愚)
• Lawrence Lau as Koo Tai-pau (古大豹)
• Chow Siu-lun as Yau Tai-hoi (遊大海)
• Kong To as Sze Hoi-yeung (施海揚)
• Henry Fong as Ho Chiu (何照)
• Cheng Yuen-fung as Law Wai-yan (羅偉仁)
• Jerry Leung as Pak Fei (白飛)